User David Loeffler

16 votes

Growth of Coefficients of cusp forms

answered Oct 28, 2010 at 7:47

16 votes

Do L-functions exist for Half-integral weight modular forms?

answered Nov 19, 2012 at 11:10

15 votes

Accepted

Maximal tamely ramified extension of $\mathbf Q_p$

answered Sep 18, 2012 at 16:12

15 votes

Accepted

The correct determinant exponent of the weight $k$-operator for defining Hecke operators/adelizing modular forms

answered May 4, 2019 at 8:23

15 votes

Accepted

Why can Euler systems constructed from algebraic cycles only be anticyclotomic?

answered Dec 22, 2019 at 12:04

15 votes

Accepted

Why is there a factor $p$ in the definition of $T_p$ via Hecke correspondences on modular curves?

answered Jul 8, 2016 at 21:04

15 votes

Accepted

Can a index 2 subgroup of $\pm\Gamma(n)\le \text{SL}_2(\mathbb{Z})$ be noncongruence?

answered Apr 8, 2017 at 8:44

15 votes

Accepted

Loss of cuspidality by Langlands tranfer

answered Jun 13, 2017 at 10:44

15 votes

Accepted

Forms of ${\rm SL}(2)$

answered Dec 6, 2020 at 10:26

14 votes

Accepted

What is the rank of the period lattice of modular forms?

answered Jan 2, 2022 at 8:38

14 votes

Accepted

Why the level of a half integral weight modular form must be a multiple of 4?

answered Mar 15, 2019 at 3:57

14 votes

Accepted

BSD conjecture for rank 1 elliptic curves

answered Aug 25, 2018 at 11:27

14 votes

Accepted

Non-trivial class number at some finite level in the cyclotomic $\mathbf{Z}_p$-extension of $\mathbf{Q}$?

answered Dec 2, 2011 at 17:07

14 votes

Accepted

Integral points on varieties

answered Jun 17, 2010 at 11:46

14 votes

Accepted

What is the value of $p$-adic $\zeta$-function at positive integer point?

answered Oct 21, 2015 at 12:00

13 votes

Accepted

Open access journals in number theory

answered Jan 23, 2015 at 11:01

13 votes

Accepted

Definition of algebraic de Rham cohomology of non-smooth affine variety

answered Jul 30, 2018 at 1:46

13 votes

What kind of non-cuspidal automorphic representation are not isobaric sums?

answered Jul 15, 2017 at 21:18

13 votes

Accepted

Do people prefer working on $\mathrm{GSp}$ and $\mathrm{GU}$ rather than $\mathrm{Sp}$ and $\mathrm{U}$, and why?

answered Mar 14, 2023 at 15:15

13 votes

Accepted

Definition of locally symmetric space of reductive groups

answered May 8, 2023 at 16:57

12 votes

Are there any open sourced or crowd source math research projects?

answered Sep 18, 2022 at 8:01

12 votes

Lacunary weight one modular forms

answered Aug 31, 2023 at 7:39

12 votes

Chow Groups of varieties over number fields

answered Dec 16, 2017 at 8:51

12 votes

Accepted

What's the status of Arthur's announced classification for GSp(4)?

answered Oct 29, 2019 at 17:45

12 votes

Accepted

Arithmetic groups and integral points of integral structures

answered Jul 14, 2021 at 13:16

12 votes

Sign and coefficients of fundamental unit of quadratic field

answered Jun 12, 2022 at 21:20

12 votes

Simple motivation to study arithmetic geometry

answered Aug 16, 2022 at 6:10

12 votes

Accepted

Example of a variety over a number field with non-semisimple Galois representation on $\ell$-adic cohomology

answered May 20, 2014 at 9:14

12 votes

Describing the crystalline extension of $\mathbb{Q}_p$ by $\mathbb{Q}_p$

answered Jan 12, 2016 at 11:31

12 votes

Accepted

Are there any Hecke operators acting on an elliptic curve with additive reduction that I don't know about?

answered Apr 12, 2010 at 13:13

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337 Answers

Growth of Coefficients of cusp forms

Do L-functions exist for Half-integral weight modular forms?

Maximal tamely ramified extension of $\mathbf Q_p$

The correct determinant exponent of the weight $k$-operator for defining Hecke operators/adelizing modular forms

Why can Euler systems constructed from algebraic cycles only be anticyclotomic?

Why is there a factor $p$ in the definition of $T_p$ via Hecke correspondences on modular curves?

Can a index 2 subgroup of $\pm\Gamma(n)\le \text{SL}_2(\mathbb{Z})$ be noncongruence?

Loss of cuspidality by Langlands tranfer

Forms of ${\rm SL}(2)$

What is the rank of the period lattice of modular forms?

Why the level of a half integral weight modular form must be a multiple of 4?

BSD conjecture for rank 1 elliptic curves

Non-trivial class number at some finite level in the cyclotomic $\mathbf{Z}_p$-extension of $\mathbf{Q}$?

Integral points on varieties

What is the value of $p$-adic $\zeta$-function at positive integer point?

Open access journals in number theory

Definition of algebraic de Rham cohomology of non-smooth affine variety

What kind of non-cuspidal automorphic representation are not isobaric sums?

Do people prefer working on $\mathrm{GSp}$ and $\mathrm{GU}$ rather than $\mathrm{Sp}$ and $\mathrm{U}$, and why?

Definition of locally symmetric space of reductive groups

Are there any open sourced or crowd source math research projects?

Lacunary weight one modular forms

Chow Groups of varieties over number fields

What's the status of Arthur's announced classification for GSp(4)?

Arithmetic groups and integral points of integral structures

Sign and coefficients of fundamental unit of quadratic field

Simple motivation to study arithmetic geometry

Example of a variety over a number field with non-semisimple Galois representation on $\ell$-adic cohomology

Describing the crystalline extension of $\mathbb{Q}_p$ by $\mathbb{Q}_p$

Are there any Hecke operators acting on an elliptic curve with additive reduction that I don't know about?